﻿using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Web.Mvc;
using System.Web;

namespace LX.NHibernate.Utils
{
    public static class PageBar
    {
        /// <summary>
        /// 页码条/HtmlString ///MvcHtmlString
        /// </summary>
        /// <param name="htmlHelper"></param>
        /// <param name="currentPage">page</param>
        /// <param name="pageSize">pageSize</param>
        /// <param name="totalCount">总的数量</param>
        /// <param name="obj_parameter">带有url参数:AjaxTest/Search?q=酒  变为：AjaxTest/Search/page2/?q=酒</param>
        /// <returns></returns>
        public static HtmlString ShowPageBar1(this HtmlHelper htmlHepler, string redirectTo, int currentPage, int pageSize, int totalCount, string obj_parameter = "")
        {
            //var redirectTo1 = htmlHepler.ViewContext.RequestContext.HttpContext.Request.Url.AbsolutePath;
            pageSize = pageSize == 0 ? 3 : pageSize;
            var totalPages = Math.Max((totalCount + pageSize - 1) / pageSize, 1); //总页数
            var output = new StringBuilder();

            //obj_parameter:带有url参数:AjaxTest/Search?q=酒  变为：AjaxTest/Search/page2/?q=酒
            if (totalPages > 1)
            {
                if (currentPage != 1)
                {//处理首页连接
                    output.AppendFormat("<a class='pageLink' href='{0}/{1}/page1'>首页</a> ", redirectTo, obj_parameter);
                }
                if (currentPage > 1)
                {//处理上一页的连接
                    output.AppendFormat("<a class='pageLink' href='{0}/{2}/page{1}'>上一页</a> ", redirectTo, currentPage - 1, obj_parameter);
                }
                else
                {
                    // output.Append("<span class='pageLink'>上一页</span>");
                }

                output.Append(" ");
                int currint = 5;
                for (int i = 0; i <= 10; i++)
                {//一共最多显示10个页码，前面5个，后面5个
                    if ((currentPage + i - currint) >= 1 && (currentPage + i - currint) <= totalPages)
                    {
                        if (currint == i)
                        {//当前页处理
                            //output.Append(string.Format("[{0}]", currentPage));
                            output.AppendFormat("<a id=\"current\" class='current' href='{0}/{3}/page{1}'>{2}</a> ", redirectTo, currentPage, currentPage, obj_parameter);
                        }
                        else
                        {//一般页处理
                            output.AppendFormat("<a class='pageLink' href='{0}/{3}/page{1}'>{2}</a> ", redirectTo, currentPage + i - currint, currentPage + i - currint, obj_parameter);
                        }
                    }
                    output.Append(" ");
                }
                if (currentPage < totalPages)
                {//处理下一页的链接
                    output.AppendFormat("<a class='pageLink' href='{0}/{2}/page{1}'>下一页</a> ", redirectTo, currentPage + 1, obj_parameter);
                }
                else
                {
                    //output.Append("<span class='pageLink'>下一页</span>");
                }
                output.Append(" ");
                if (currentPage != totalPages)
                {
                    output.AppendFormat("<a class='pageLink' href='{0}/{2}/page{1}'>末页</a> ", redirectTo, totalPages, obj_parameter);
                }
                output.Append(" ");
            }
            output.AppendFormat("第{0}页 / 共{1}页", currentPage, totalPages);//这个统计加不加都行

            return new HtmlString(output.ToString());
        }

        public static HtmlString ShowPageBarMvc(this HtmlHelper htmlHepler, string redirectTo, int currentPage, int pageSize, int totalCount, string obj_parameter = "")
        {
            pageSize = pageSize == 0 ? 3 : pageSize;
            var totalPages = Math.Max((totalCount + pageSize - 1) / pageSize, 1); //总页数
            var output = new StringBuilder();

            output.Append(" <div class=\"pagination-container\"><ul class=\"pagination\">");

            //obj_parameter:带有url参数:AjaxTest/Search?q=酒  变为：AjaxTest/Search/page2/?q=酒
            if (totalPages > 1)
            {
                if (currentPage != 1)
                {//处理首页连接
                    output.AppendFormat("<li><a href='{0}/page1?{1}'>首页</a> </li>", redirectTo, obj_parameter);
                }
                if (currentPage > 1)
                {//处理上一页的连接
                    output.AppendFormat("<li><a  href='{0}/page{1}?{2}'>上一页</a> </li>", redirectTo, currentPage - 1, obj_parameter);
                }
                else
                {
                    // output.Append("<span class='pageLink'>上一页</span>");
                }

                output.Append(" ");
                int currint = 5;
                for (int i = 0; i <= 10; i++)
                {//一共最多显示10个页码，前面5个，后面5个
                    if ((currentPage + i - currint) >= 1 && (currentPage + i - currint) <= totalPages)
                    {
                        if (currint == i)
                        {//当前页处理
                            //output.Append(string.Format("[{0}]", currentPage));
                            output.AppendFormat("<li  class='active' ><a id=\"current\" href='{0}/page{1}?{3}'>{2}</a></li> ", redirectTo, currentPage, currentPage, obj_parameter);
                        }
                        else
                        {//一般页处理
                            output.AppendFormat("<li><a  href='{0}/page{1}?{3}'>{2}</a> </li>", redirectTo, currentPage + i - currint, currentPage + i - currint, obj_parameter);
                        }
                    }
                    output.Append(" ");
                }
                if (currentPage < totalPages)
                {//处理下一页的链接
                    output.AppendFormat("<li><a  href='{0}/page{1}?{2}'>下一页</a> </li>", redirectTo, currentPage + 1, obj_parameter);
                }
                else
                {
                    //output.Append("<span class='pageLink'>下一页</span>");
                }
                output.Append(" ");
                if (currentPage != totalPages)
                {
                    output.AppendFormat("<li><a href='{0}/page{1}?{2}'>末页</a></li> ", redirectTo, totalPages, obj_parameter);
                }
                output.Append(" ");
            }
            output.AppendFormat("<li><a> 第{0}页 / 共{1}页</a></li>", currentPage, totalPages);//这个统计加不加都行
            output.Append("</ul></div>");


            return new HtmlString(output.ToString());
        }

        /// <summary>
        /// 页码条
        /// </summary>
        /// <param name="htmlHelper"></param>
        /// <param name="currentPage">page</param>
        /// <param name="pageSize">pageSize</param>
        /// <param name="totalCount">总的数量</param>
        /// <returns></returns>
        public static string ShowPageBar2(this HtmlHelper htmlHepler, string redirectTo, int currentPage, int pageSize, int totalCount)
        {
            //var redirectTo = htmlHepler.ViewContext.RequestContext.HttpContext.Request.Url.AbsolutePath;
            pageSize = pageSize == 0 ? 3 : pageSize;
            var totalPages = Math.Max((totalCount + pageSize - 1) / pageSize, 1); //总页数
            var output = new StringBuilder();
            if (totalPages > 1)
            {
                if (currentPage != 1)
                {//处理首页连接
                    output.AppendFormat("<a class='pageLink' href='{0}?page=1&pageSize={1}'>首页</a> ", redirectTo, pageSize);
                }
                if (currentPage > 1)
                {//处理上一页的连接
                    output.AppendFormat("<a class='pageLink' href='{0}?page={1}&pageSize={2}'>上一页</a> ", redirectTo, currentPage - 1, pageSize);
                }
                else
                {
                    // output.Append("<span class='pageLink'>上一页</span>");
                }

                output.Append(" ");
                int currint = 5;
                for (int i = 0; i <= 10; i++)
                {//一共最多显示10个页码，前面5个，后面5个
                    if ((currentPage + i - currint) >= 1 && (currentPage + i - currint) <= totalPages)
                    {
                        if (currint == i)
                        {//当前页处理
                            //output.Append(string.Format("[{0}]", currentPage));
                            output.AppendFormat("<a class='cpb' href='{0}?page={1}&pageSize={2}'>{3}</a> ", redirectTo, currentPage, pageSize, currentPage);
                        }
                        else
                        {//一般页处理
                            output.AppendFormat("<a class='pageLink' href='{0}?page={1}&pageSize={2}'>{3}</a> ", redirectTo, currentPage + i - currint, pageSize, currentPage + i - currint);
                        }
                    }
                    output.Append(" ");
                }
                if (currentPage < totalPages)
                {//处理下一页的链接
                    output.AppendFormat("<a class='pageLink' href='{0}?page={1}&pageSize={2}'>下一页</a> ", redirectTo, currentPage + 1, pageSize);
                }
                else
                {
                    //output.Append("<span class='pageLink'>下一页</span>");
                }
                output.Append(" ");
                if (currentPage != totalPages)
                {
                    output.AppendFormat("<a class='pageLink' href='{0}?page={1}&pageSize={2}'>末页</a> ", redirectTo, totalPages, pageSize);
                }
                output.Append(" ");
            }
            output.AppendFormat("第{0}页 / 共{1}页", currentPage, totalPages);//这个统计加不加都行

            return output.ToString();
        }

    }
}
